Steel bar positioning tool for prefabricated column

Abstract

The utility model discloses a steel bar positioning tool for a prefabricated column. The steel bar positioning tool comprises a protective sleeve and a positioning assembly. The positioning assembly comprises a fixing seat and a limiting sleeve, the limiting sleeve can be movably arranged on the fixing seat in a limited mode, and the fixing seat is connected with the protective sleeve through the limiting sleeve; the number of the limiting sleeves is multiple, and the multiple limiting sleeves are arranged at intervals in the set direction. The number of the protective sleeves is consistent with that of the limiting sleeves, and the protective sleeves and the limiting sleeves are connected in a one-to-one correspondence mode. Each fixing seat comprises a connecting end I and a connecting end II, the number of the positioning assemblies is four, the corresponding fixing seats in the four positioning assemblies are sequentially connected end to end to form an annular structure, and the connecting end I of the fixing seat in the previous positioning assembly is fixed to the connecting end II of the fixing seat in the next positioning assembly; the construction efficiency of the prefabricated column can be improved, and the construction cost can be reduced.

Description

Technical Field

[0001] The invention relates to the field of building construction, and in particular to a steel bar positioning tool for a prefabricated column. Background Art

[0002] In order to prevent the displacement of the column and the steel bar due to vibration during the concrete pouring process, steel plates are used to drill holes to position the column bars in the steel cage when pouring precast columns. The steel bars are limited when passing through the steel plates, and the steel plates are welded to the steel cage. The steel threads are protected by PVC sleeves. The existing construction process consumes a huge amount of steel plates and PVC sleeves. The holes in the steel plates are constructed on-site and cannot be restored. For the case of steel cages with the same diameter but inconsistent number of column bars, the steel plates can only be reselected and holes drilled, which has low construction efficiency and difficult to control construction costs.

[0003] Therefore, in order to solve the above problems, a steel bar positioning tool for prefabricated columns is needed, which can improve the construction efficiency of prefabricated columns and reduce construction costs. Summary of the invention

[0004] In view of this, an object of the present invention is to overcome the defects in the prior art and provide a steel bar positioning tool for prefabricated columns, which can improve the construction efficiency of prefabricated columns and reduce construction costs.

[0005] The steel bar positioning tool for prefabricated columns of the present invention comprises a protective sleeve and a positioning assembly; the positioning assembly comprises a fixing seat and a limiting sleeve, the limiting sleeve can be movably arranged on the fixing seat in a limited position, and the fixing seat is connected to the protective sleeve through the limiting sleeve; there are a plurality of limiting sleeves, and the plurality of limiting sleeves are arranged at intervals along a set direction; the number of the protective sleeves is the same as that of the limiting sleeves, and the protective sleeves are connected to the limiting sleeves in a one-to-one correspondence;

[0006] The fixing seat includes a connecting end I and a connecting end II. The positioning components are divided into four groups. The fixing seats corresponding to the four groups of positioning components are connected end to end in sequence to form a ring structure. The connecting end I of the fixing seat in the upper-level positioning component is fixed to the connecting end II of the fixing seat in the lower-level positioning component.

[0007] Furthermore, it also includes an anti-loosening component, which includes a fixed part and a movable part. The movable part can be movably set on the fixed part in a limited position, and the fixed seat has a limiting part for limiting the movable part, so that the fixed part can be limited on the fixed seat through the movable part.

[0008] Furthermore, the fixing part is in a centrally symmetrical "cross" shape, the movable parts are four in number, which is the same as the number of the ends of the "cross", the movable parts are connected to the ends of the "cross" in a one-to-one correspondence, and each of the movable parts can be limitedly movable and set at one of the ends of the "cross"; the corresponding fixed seat in each group of the positioning components has a limiting portion for limiting any movable part.

[0009] Furthermore, each end of the "cross"-shaped fixing member has an external thread, and the movable member has an internal thread that is threadedly connected to the external thread. The movable member is cylindrical and threadedly connected to the end of the "cross"-shaped member in a sleeve manner. The limiting portion is a limiting groove opened on the fixing seat, and the movable member extends into the recess of the limiting groove so that the fixing member is limited by the fixing seat.

[0010] Furthermore, the protective sleeve has an internal thread adapted to the external thread of the pre-connected steel bar, and the protective sleeve is fixed on the pre-connected steel bar by the cooperation of the internal thread and the external thread;

[0011] The limiting sleeve has a through hole, the aperture of the through hole is larger than the outer edge size of the protective sleeve, and the aperture of the through hole is close to the outer edge size of the limiting sleeve;

[0012] The bottom of the protective sleeve is provided with a blocking portion for supporting the fixing seat.

[0013] Furthermore, a slide groove is provided on the fixing seat, and the protective sleeve is guided by the slide groove and limited in the slide groove.

[0014] Furthermore, it also includes an adjusting gasket, which is arranged between adjacent protective sleeves that are limited in the same slide groove;

[0015] There are a plurality of adjusting gaskets, and the distance between adjacent protective sleeves can be adjusted by increasing or decreasing the number of the adjusting gaskets.

[0016] Further, the fixing seat is in the shape of a strip extending in the transverse direction, the slide groove includes a rib-piercing opening in the shape of a letter "I" that penetrates the fixing seat from top to bottom, the slide groove also includes an assembly groove in the shape of a letter "O" that is opened in the fixing seat from back to front in the transverse direction, the rib-piercing opening is connected to the assembly groove, and the rib-piercing opening and the assembly groove that are connected in the longitudinal section are in the shape of a letter "X";

[0017] The transverse rear end of the fixing seat forms a connecting end II, and the transverse front end of the fixing seat protrudes forward to form a connecting end I.

[0018] Furthermore, the connection end I of the fixing seat in the upper-level positioning assembly is fixed to the connection end II of the fixing seat in the lower-level positioning assembly by bolts.

[0019] The present invention also discloses a prefabricated column construction method using a reinforcement auxiliary tool for the prefabricated column, comprising the following steps:

[0020] S1. Install the reinforcement positioning tool for the precast column on the reinforcement cage;

[0021] The steps to install the rebar locating tool for precast columns include:

[0022] a. The protective sleeve is set on the threaded section of the pre-connected steel bar in the steel cage, the number of the protective sleeve is consistent with the number of pre-connected steel bars in the steel cage, and a protective sleeve is set on each pre-connected steel bar;

[0023] b. Assemble and fix four sets of positioning components on the steel cage, and at the preset position of each set of positioning components, each limit sleeve in each set of positioning components is correspondingly sleeved on a protective sleeve;

[0024] Adjacent protective sleeves in the same group of positioning components are fixed by adjusting the number of gaskets;

[0025] c. Assemble the anti-loosening component and four sets of positioning components to form a whole;

[0026] d. Adjust the assembled steel bar positioning tool for the prefabricated column to shift downward on the steel cage so that the bottom surfaces of the plurality of protective sleeves are approximately located at the same horizontal plane;

[0027] S2. Precast column grouting;

[0028] S3. Remove the reinforcement positioning tool for precast columns.

[0029] The beneficial effects of the present invention are as follows: the steel bar positioning tool for prefabricated columns disclosed by the present invention improves the efficiency and quality of prefabricated column construction by arranging a protective sleeve and a positioning component; the protective sleeve has an internal thread that matches the external thread of the pre-connected steel bar, and the protective sleeve is fixed on the pre-connected steel bar by matching the internal thread and the external thread. Since the two are threadedly assembled, the steel bar thread part is protected by the setting of the protective sleeve, and the protective sleeve can be reused, which greatly saves the use of disposable PVC sleeves, saves construction costs, and has a better protective effect on the thread, and will not cause the situation in the prior art that the PVC sleeve is not able to protect the steel bar thread in place; the positioning component includes a fixed seat and a limiting sleeve, and the limiting sleeve can be movably set on the fixed seat in a limited position, and the fixed seat The fixed seat is connected to the protective sleeve through a limiting sleeve; the limiting sleeve can be limited on the fixed seat, so that the spacing between adjacent protective sleeves can be adjusted and fixed, which is suitable for the situation where the same diameter steel cages have inconsistent numbers of column bars. It has stronger versatility and better economy, and the construction cost can be controlled within a low range; since the prefabricated column is a rectangular column, the positioning assembly is arranged into four groups corresponding thereto, which ensures the adaptability of the structure, helps to ensure the reliability of the fixation of the tool on the steel cage, ensures the stability of the connection between the two, and plays a reliable protection effect on the threaded section of the steel bar. At the same time, it ensures the reliability of the steel cage structure, prevents the column and the steel bar from being offset due to vibration during the concrete pouring process, improves the construction quality and efficiency, and the structure is reusable, and the construction cost is relatively low. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below in conjunction with the accompanying drawings and embodiments:

[0031] Figure 1 It is a structural schematic diagram of the present invention;

[0032] Figure 2 It is a structural schematic diagram of a group of positioning components of the present invention;

[0033] Figure 3 For the present invention Figure 2 AA structural diagram;

[0034] Figure 4 For the present invention Figure 2 BB structural diagram;

[0035] Figure 5 For the present invention Figure 2 Schematic diagram of CC structure;

[0036] Figure 6 For the present invention Figure 2 A side view structural schematic diagram of;

[0037] Figure 7 For the present invention Figure 1Schematic diagram of the structure at D;

[0038] Figure 8 It is a schematic diagram of the structure of the protective cover of the present invention;

[0039] Fig. 9 It is a schematic diagram of the longitudinal section structure of the protective cover of the present invention. DETAILED DESCRIPTION

[0040] Figure 1 It is a structural schematic diagram of the present invention. As shown in the figure, the steel bar positioning tool for prefabricated columns in this embodiment includes a protective sleeve 1 and a positioning component; the protective sleeve 1 has an internal thread 2 adapted to the external thread of the pre-connected steel bar, and the protective sleeve 1 is fixed on the pre-connected steel bar by the cooperation of the internal thread 2 and the external thread. Since the two are threaded assembly, the steel bar thread part is protected by the setting of the protective sleeve 1, and the protective sleeve 1 can be reused, which greatly saves the use of disposable PVC sleeves, saves construction costs, and has a better protection effect on the thread, and will not cause the situation in the prior art that the PVC sleeve is not in place to protect the steel bar thread; the protective sleeve 1 is a number consistent with the number of pre-connected steel bars, and the protective sleeve 1 is connected to the pre-connected steel bars in a one-to-one correspondence;

[0041] The positioning assembly includes a fixed seat 3 and a limiting sleeve 4, the limiting sleeve 4 can be movably set on the fixed seat 3 in a limited position, and the fixed seat 3 is connected to the protective sleeve 1 through the limiting sleeve 4; there are a plurality of limiting sleeves 4, and the plurality of limiting sleeves 4 are arranged at intervals along a set direction; the number of the protective sleeves 1 is the same as that of the limiting sleeves 4, and the protective sleeves 1 and the limiting sleeves 4 are connected in a one-to-one correspondence; the limiting sleeve 4 can be movably limited on the fixed seat 3, so that the spacing between adjacent protective sleeves 1 can be adjusted and fixed, which is suitable for the situation where the number of column bars of the same diameter steel cage is inconsistent, has stronger versatility and better economy, and the construction cost can be controlled within a lower range; the limiting sleeve 4 can be connected by pins, clamps or springs, etc., so as to facilitate positioning or releasing the positioning limiting sleeve 4, which will not be repeated here;

[0042] The fixing seat 3 includes a connection end Ⅰ5 and a connection end Ⅱ6. The positioning components are divided into four groups. The corresponding fixing seats 3 in the four groups of positioning components are connected end to end in sequence to form a ring structure. The connection end Ⅰ5 of the fixing seat 3 in the upper-level positioning component is fixed to the connection end Ⅱ6 of the fixing seat 3 in the lower-level positioning component. Since the prefabricated column is a rectangular column, the positioning components are arranged into four groups corresponding thereto. During installation, the four groups of positioning components are respectively parallel to the four sides of the rectangular column to form a rectangular ring structure, which ensures the adaptability of the structure, helps to ensure the reliability of the tool being fixed on the steel cage, ensures the stability of the connection between the two, and plays a reliable protective effect on the threaded section of the steel bar. At the same time, it ensures the reliability of the steel cage structure, prevents the column and the steel bar from being offset due to vibration during the concrete pouring process, improves the construction quality and efficiency, and the structure can be reused, and the construction cost is relatively low. During actual construction, the number of positioning components can be adjusted according to the special-shaped column, which will not be repeated here.

[0043] In this embodiment, an anti-loosening assembly is also included, and the anti-loosening assembly includes a fixed part 7 and a movable part 8. The movable part 8 can be movably set on the fixed part 7 in a limited position, and the fixed seat 3 has a limiting portion 9 for limiting the movable part 8, so that the fixed part 7 is limited on the fixed seat 3 through the movable part 8; further, the fixed part 7 is in a centrally symmetrical "cross" shape, and the adjacent sides of the "cross" are connected by reinforcing ribs 10, that is, in this solution, there are four reinforcing ribs 10, and each reinforcing rib 10 is in an arc shape with the same structure. In the vertical projection, the four reinforcing ribs 1 0 are connected end to end to form a circular ring structure, the center of the circular ring structure roughly coincides with the center of the "cross"-shaped fixing piece 7 to enhance the structural strength of the fixing piece 7, and the arrangement of the reinforcing ribs 10 facilitates the carrying and operation of the anti-loosening assembly, the movable parts 8 are four in number, which is the same as the number of the "cross"-shaped ends, and the movable parts 8 are connected to the "cross"-shaped ends in a one-to-one correspondence, and each of the movable parts 8 can be limited and movable to one of the "cross"-shaped ends; the corresponding fixing seat 3 in each group of the positioning assembly has a limiting portion 9 for limiting any movable part 8. Since the cross section of the prefabricated column is square and the cross section is perpendicular to the longitudinal direction, the use of the fixing piece 7 can more tightly fix the positioning assembly to the steel cage, thereby maintaining the position of each steel bar in the steel cage and ensuring the pouring quality of the prefabricated column; for more details, see Figure 1 and Figure 7Each end of the "cross"-shaped fixing member 7 has an external thread, and the movable member 8 has an internal thread that is threadedly connected to the external thread. The movable member 8 is cylindrical and threadedly connected to the end of the "cross"-shaped member in a sleeve manner, so that the movable member 8 can be extended or shortened on the end corresponding to the fixing member 7 through the thread. The limiting portion 9 is a limiting groove opened on the fixing seat 3, and the limiting groove is cylindrical. The radial dimension of the limiting groove is larger than the radial dimension of the movable member 8, so that the movable member 8 can be smoothly limited by the limiting groove, and the movable member 8 extends into the recess of the limiting groove so that the fixing member 7 is limited by the fixing seat 3. The adjustment method of this structure is simple and the connection method is more reliable. When the four movable parts 8 are respectively limited in the limiting grooves, the fixing parts 7 also form a limit for the four groups of positioning components. In actual use, the movable parts 8 can be made to abut against the bottom of the limiting grooves, so that the fixing parts 7 form support for the four groups of positioning components, further satisfying the position maintenance of each steel bar in the steel cage and improving the pouring quality of the prefabricated column.

[0044] In this embodiment, the limiting sleeve 4 has a through hole 11, the aperture of the through hole 11 is larger than the outer edge size of the protective sleeve 1, that is, the radial size of the through hole 11 is larger than the radial size of the protective sleeve 1, and the aperture of the through hole 11 is close to the outer edge size of the limiting sleeve 4, so that the limiting sleeve 4 can define the position of the steel bar with the protective sleeve 1, thereby improving the construction quality of the prefabricated column;

[0045] Furthermore, the bottom of the protective cover 1 has a blocking portion 12 for supporting the fixing seat 3, such as Figure 8 and Fig. 9 As shown, the protective sleeve 1 is a hexagonal nut with a blocking portion 12 at the bottom, and the hexagonal nut has a non-threaded section 13 near the bottom end of the blocking portion 12. The length of the non-threaded section 13 is less than half the length of the threaded section. The arrangement of the non-threaded section 13 can make the bottom surfaces of multiple protective sleeves 1 approximately located in the same plane, thereby effectively protecting the threaded sections of the steel bars, and the blocking portion 12 is formed by extending outward from the bottom outer edge of the hexagonal nut to enhance the supporting capacity of the fixing seat 3. Of course, the blocking portion 12 can also be a straight arm structure or a raised structure, which is suitable for the function of limiting support for the fixing seat 3, and will not be repeated here.

[0046] In this embodiment, a slide groove is provided on the fixing seat 3, and the protective sleeve 1 is guided by the slide groove and is limited in the slide groove; further, as Figure 2 and Figure 3 As shown, the fixing seat 3 is in the shape of a strip extending in the transverse direction, and the slide groove includes a rib-piercing opening in the shape of a "one" that penetrates the fixing seat 3 from top to bottom, and the rib-piercing opening is located in the middle of the width direction of the fixing seat 3; combined Figure 4 and Figure 5As shown, the slide groove also includes an assembly groove which is opened in the fixing seat 3 in a "mouth" shape from back to front in the transverse direction, and the rib-piercing opening is connected with the assembly groove, and the rib-piercing opening and the assembly groove which are connected in the longitudinal section are in a "cross" shape;

[0047] The outer contour of the longitudinal section of the limiting sleeve 4 is consistent with the groove shape and size of the assembly groove, so that the limiting sleeve 4 can be movably set in the assembly groove in a limited position. The diameter of the through hole 11 on the limiting sleeve 4 for the protective sleeve 1 to pass through is roughly the same as the size of the rib penetration direction, so that the protective sleeve 1 can be smoothly and reliably connected to the limiting sleeve 4.

[0048] In this embodiment, Figure 3 As shown, it also includes an adjusting gasket 14, which is limited between adjacent protective sleeves 1 in the same slide groove; the outer contour of the longitudinal section of the adjusting gasket 14 is consistent with the groove shape and size of the assembly groove, and the longitudinal section is perpendicular to the horizontal direction, so that the adjusting gasket 14 can be limited and movably set in the assembly groove; there are several adjusting gaskets 14, and the distance between adjacent protective sleeves 1 is adjusted by increasing or decreasing the number of adjusting gaskets 14; this scheme adjusts the distance between adjacent protective sleeves 1 by increasing or decreasing the number of several gaskets, and the distance after adjustment by the gasket is determined, and the protective sleeve 1 will not move, which meets the position maintenance of each steel bar in the steel cage and improves the pouring quality of the prefabricated column.

[0049] In this embodiment, Figure 2 and Figure 3 and Figure 6 As shown, the lateral rear end of the fixing seat 3 forms a connecting end II6, and the lateral front end of the fixing seat 3 protrudes forward to form a connecting end I5. More specifically, the connecting end I5 is a flat square structure, and the connecting end II6 is a clip structure. The connecting end I5 of the fixing seat 3 in the upper-level positioning assembly and the connecting end II6 of the fixing seat 3 in the lower-level positioning assembly are fixed by bolts. The connecting end I5 extends into the connecting end II6 and the two are fixed. The connecting end I5 closes the lateral rear end of the assembly groove so that the adjusting gasket 14 and the protective cover 1 located in the assembly groove are positioned to improve the structural reliability. The adjacent fixing seats 3 are fixed by bolts, which is convenient for disassembly and installation, and the structure is stable.

[0050] The present invention also discloses a prefabricated column construction method using a reinforcement auxiliary tool for the prefabricated column, comprising the following steps:

[0051] S1. Install the reinforcement positioning tool for the precast column on the reinforcement cage;

[0052] The steps to install the rebar locating tool for precast columns include:

[0053] a. The protective sleeve 1 is set on the pre-connected steel bar threaded section in the steel cage, the number of the protective sleeve 1 is consistent with the number of pre-connected steel bars in the steel cage, and a protective sleeve 1 is set on each pre-connected steel bar;

[0054] b. Assemble and fix four sets of positioning components on the steel cage, and at the preset position of each set of positioning components, each limit sleeve 4 in each set of positioning components corresponds to a protective sleeve 1;

[0055] The adjacent protective sleeves 1 in the same group of positioning components are fixed by adjusting the number of gaskets 14; and the adjacent positioning components are assembled and fixed;

[0056] c. Assemble the anti-loosening component and four sets of positioning components to form a whole;

[0057] d. Adjust the assembled steel bar positioning tool for the prefabricated column to shift downward on the steel cage so that the bottom surfaces of the plurality of protective sleeves 1 are approximately located at the same horizontal plane; thereby improving the protective effect of the steel bar threaded section;

[0058] S2. Precast column grouting;

[0059] S3. After the grouting of the precast column is completed, remove the steel bar positioning tool used for the precast column.

[0060] The efficiency and quality of prefabricated column construction are improved by setting the protective sleeve 1 and the positioning component; the protective sleeve 1 has an internal thread that is compatible with the external thread of the pre-connected steel bar, and the protective sleeve 1 is fixed on the pre-connected steel bar by the cooperation of the internal thread and the external thread. Since the two are threaded assembly, the steel bar thread part is protected by the setting of the protective sleeve 1, and the protective sleeve 1 can be reused, which greatly saves the use of disposable PVC sleeves, saves construction costs, and has a better protection effect on the thread, and will not cause the situation in the prior art that the PVC sleeve does not protect the steel bar thread in place; the positioning component includes a fixing seat 3 and a limiting sleeve 4, and the limiting sleeve 4 can be movably set on the fixing seat 3 by limiting, and the fixing seat 3 is connected to the protective sleeve 1 through the limiting sleeve 4. Connection; the limiting sleeve 4 can be limited on the fixing seat 3, so that the spacing between adjacent protective sleeves 1 can be adjusted and fixed, which is suitable for the situation where the same diameter steel cages have inconsistent number of column bars. It has stronger versatility and better economy, and the construction cost can be controlled within a low range; since the prefabricated column is a rectangular column, the positioning assembly is arranged into four groups corresponding thereto, which ensures the adaptability of the structure, helps to ensure the reliability of the fixation of the tool on the steel cage, ensures the stability of the connection between the two, and plays a reliable protection effect on the threaded section of the steel bar. At the same time, it ensures the reliability of the steel cage structure, prevents the column and the steel bar from shifting due to vibration during the concrete pouring process, improves the construction quality and efficiency, and the structure is reusable, and the construction cost is relatively low.

[0061] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A reinforcement positioning tool for prefabricated columns, characterized in that: It includes a protective sleeve and a positioning assembly; the protective sleeve has an internal thread that matches the external thread of the pre-connected steel bar, and the protective sleeve is fixed on the pre-connected steel bar through the cooperation of the internal thread and the external thread; The positioning assembly includes a fixing seat and a limiting sleeve, wherein the limiting sleeve can be movably arranged on the fixing seat in a limiting manner, the fixing seat is connected to the protective sleeve via the limiting sleeve, and the protective sleeve has a blocking portion for supporting the fixing seat; There are a plurality of the limiting sleeves, which are arranged at intervals along a set direction; the number of the protective sleeves is the same as that of the limiting sleeves, and the protective sleeves are connected to the limiting sleeves in a one-to-one correspondence; The fixing seat includes a connecting end I and a connecting end II. The positioning components are divided into four groups. The fixing seats corresponding to the four groups of positioning components are connected end to end in sequence to form a ring structure. The connecting end I of the fixing seat in the upper-level positioning component is fixed to the connecting end II of the fixing seat in the lower-level positioning component.

2. The steel bar positioning tool for prefabricated columns according to claim 1, characterized in that: It also includes an anti-loosening component, which includes a fixed part and a movable part. The movable part can be movably set on the fixed part in a limited position. The fixed seat has a limiting part for limiting the movable part, so that the fixed part can be limited on the fixed seat through the movable part.

3. The steel bar positioning tool for prefabricated columns according to claim 2, characterized in that: The fixing part is in a centrally symmetrical "cross" shape, and the number of the movable parts is four, which is the same as the number of the ends of the "cross". The movable parts are connected to the ends of the "cross" in a one-to-one correspondence, and each of the movable parts can be limitedly movable and set at one of the ends of the "cross"; the corresponding fixing seat in each group of the positioning components has a limiting portion for limiting any movable part.

4. The reinforcement positioning tool for prefabricated columns according to claim 3, characterized in that: Each end of the "cross"-shaped fixing part has an external thread, and the movable part has an internal thread that is threadedly connected to the external thread. The movable part is cylindrical and threadedly connected to the end of the "cross" in a sleeve manner. The limiting part is a limiting groove opened on the fixing seat, and the movable part extends into the recess of the limiting groove so that the fixing part is limited by the fixing seat.

5. The reinforcement positioning tool for prefabricated columns according to claim 2, characterized in that: The protective sleeve has an internal thread that matches the external thread of the pre-connected steel bar, and the protective sleeve is fixed on the pre-connected steel bar through the cooperation of the internal thread and the external thread; The limiting sleeve has a through hole, the aperture of the through hole is larger than the outer edge size of the protective sleeve, and the aperture of the through hole is close to the outer edge size of the limiting sleeve.

6. The reinforcement positioning tool for prefabricated columns according to claim 1, characterized in that: The fixing seat is provided with a sliding groove, and the protective sleeve is guided by the sliding groove and is limited in the sliding groove.

7. The reinforcement positioning tool for prefabricated columns according to claim 6, characterized in that: It also includes an adjustment gasket, which is arranged between adjacent protective sleeves that are limited in the same slide groove; There are a plurality of adjusting gaskets, and the distance between adjacent protective sleeves can be adjusted by increasing or decreasing the number of the adjusting gaskets.

8. The reinforcement positioning tool for prefabricated columns according to claim 6, characterized in that: The fixing seat is in the shape of a strip extending in the transverse direction, and the slide groove includes a rib-penetrating opening in the shape of an "I" that penetrates the fixing seat from top to bottom. The slide groove also includes an assembly groove in the shape of an "O" opened in the fixing seat in the transverse direction from back to front, and the rib-penetrating opening is connected with the assembly groove, and the rib-penetrating opening and the assembly groove connected in the longitudinal section are in the shape of a "X".

9. The reinforcement positioning tool for prefabricated columns according to claim 1, characterized in that: The transverse rear end of the fixing seat forms a connection end II, and the transverse front end of the fixing seat protrudes forward to form a connection end I; the connection end I of the fixing seat in the upper level positioning assembly and the connection end II of the fixing seat in the lower level positioning assembly are fixed by bolts.

10. The steel bar positioning tool for prefabricated columns according to claim 2, characterized in that: The bottom of the protective sleeve is provided with a blocking portion for supporting the fixing seat.

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